Thread and method of making the same



J. G. BENTLEY. M V THREAD AND METHOD OF MAKING THE SAME.

APPLICATION FILEVD JAN. 10. 1921.

Patented Apr. 11,- 1922.

INVENTO/i', 301m QBen A TTORNEY UNITED STATES PATENT OFFICE.

JOHN G.. BENTLEY, 0F PATERSON, NEW JERSEY THREAD AND METI HOD OF MAKING THE SAME.

Application filed January 10, 1921. Serial Iva 436,075.

To all whom it magy concern:

Be it known that I, JoHN G. BENTLEY, a citizen of the United States, residing at Paterson, in the county ofPassaic and State of New Jersey, have invented certain new and useful Improvements in Threads and Methods of Making the Same, of which the following is a specification.

It is the principal object of this invention to provide ayarn which will have superficially certain qualities that characterize yarns made of one class of fibres, as the surface feel and appearance of silk, but in-' herently will have qualities that characterize yarns made of another class of fibres, as the elastic compressibility of wool. To state the principal object which I have especially in mind, it is to provide a thread or yarn from which to manufacture fabric suitable for use in mens suitings, for exam 1e, and which fabric will have the surface eel and, appearance of silk, but the texture, life and body characteristic of wool.

According to my invention, I first prepare yarn to compose the warp or weft or other constitutent threads of the fabric (I shall hereinafter term it thread) which is constituted by a wool core yarn and a less compressible silk yarn wrapping spirally embracing the core yarn and holding the core yarn compressed.- The thread thus composed is then according to my invention .made up into fabric by any fabric making On ac- ,have in order for it to be worked up successfully into a fabric and which could not otherwise be obtained unless the two yarns were twisted in some way each about the other, which would necessarily bring the core yarn tothe surface of the thread so that the latter would cease to be one whose a pearance and feel simulated that of the si k or other selected covering Or wrapping.

yarn; and on account of the less compresslbility of the wrapping yarn the improved thread and. fabric, while soft and yielding under pressure, have the surface feel and around another.

a pearance. of smooth-surface materials like s1 My invention consists, first, in thread constituted by wool core yarn and a less com pressible silk yarn wrapping spirally embracing and preferably covering the core yarn and holding the same compressed; and, second, in a method of forming thread whereby one or more yarns will be wrapped wool (as worsted) and silk yarns in which the wool yarn 1 stands stretched to greater extent than the silk yarn 2; the drawing shows, simply by way of example, one wool yarn and three silk yarns. In Figure 4 a weighted friction brake b is shown a plied to the Whirl c on the supply bObE-III d of the wool yarn, whereas the bobbins e for the silk yarn have no such braking or tension-producing medium, wherefore the wool yarn will be wound onto bobbin a stretched to greater degree than the silk yarns. By stretched herein Imean that'it is distended. bringing its elasticityrinto play.

Having prepared such a package a of doubled wool and silk yarns, the package is placed on a spinning spindle 7 (Figure 5 equipped with means to rotate it, as a whirl g and a suitably driven belt .72., and also equipped with a flier z freely revoluble relatively to the package at and having a lateral guiding eye 71 and an axial guiding eye 11" through which the yarns extend, .as shown, and the yarns are drawn from the package a, as by being wound up on the suitably rotated bobbin j, and spun. In the transfer from" package a to bobbin 7' the wool yarn, existing in package a stretched to greater extent than the silk yarn, now undergoes liberation and so contracts in length;

the silk yarn, however, being not stretched, or at least less stretched, undergoes no such contraction .at this time. Consequently during the spinning, while the tauter wool yarn, tending to adhere to a straight line between 2" and j, preserves a relatively axial or central .position, the silk yarn, being of greater effective length, tends to balloon outwardly relatively to the wool yarn, and so becomes wrapped around it. (So far as I know, this method of forming a thread having a core yarn which is straight and the spiralling confined to another yarn which becomes a wrapping yarn in the finished product, such method depending on first doubling yarns under a condition of disparity of stretch and then spinning them while simultaneously allowing the more stretched yarn to contract, is in itself broadly new). Of course the mere wrapping of the silk yarn around the wool yarn, by

causing a constriction of the latter, in itself sets up a grip between the core and the wrapping tending to prevent the latter from slipping on the former in the finished product. But the grip is further enhanced because at the time the wrapping occursthe wool yarn has not contracted in length to its normal limit (indeed, this may not occur until the thread is later on removed from the bobbin j), or, which is the same thing, it has not expanded in diameter to its normal limit, so that ultimately it comes to exert an outward pressure on the wrapping. F igure 3 illustrates a wool yarn under tension, or as it would be on bobbin a, and Figure 2, at the right, shows the (uncovered) wool yarn relaxed or contracted to its normal length, the diameter of the yarn inthe former case being less than in the latter because of the known tendency of the fibres to .assume true parallelism when the yarn is stretched.

Having prepared thread by the above or any other method so long as such thread is constituted by an elastic compressible core yarn and a less compressible yarn wrapped about the core yarn and holding the core yarn compressed, I make the same up into a fabric, in any way, as the woven fabric shown in Figure 1.

Having thus fully described my invention, what I claim'as new and desire to secure by Letters Patent is 1. Thread comprising wool core yarn and a less compressible silk yarn wrapping spirally'embracing the core yarn and holding the latter compressed. v

2. The method of forming thread which consists in winding yarns in doubled state into a wound package with one stretched to greaterextent than the other or others. and then rotating said package and meanwhile withdrawing lengthwise the doubled yarns from the package and at that time allowing the first named yarn to contract in length, whereby to spin the yarns by Wrapping said other, yarn or.yarns around the first-named yarn.

In testimony whereof I affix my signature.

JOHN G. BENTLEY. 

